I'm pretty keen on Barkeeper's friend too. I have this house's original porcelain kitchen sink and original enameled iron tub. These things have been in continuous use for nearly 100 years and no one would ever refer to them as being pristine. That's OK, I love them anyhow. I'm telling you though NOTHING cleans old enamel and old porcelain like Bar Keeper's Friend. I like to scrub my pots out with it from time to time too. It shines them up good as new.